/Engine/Source/Editor/LandscapeEditor/Public/LandscapeFileFormatInterface.h
struct FLandscapeFileTypeInfo
bool
bSupportsExport
Whether this file type supports exporting from the editor back to file (All file types must supportimporting, but exporting is optional)
FText
Description
Description of file type for the file selector.
TArray<FString...
Extensions
Extensions for this type, with leading dot, e.g. ".png".